Planetary gearing



July 24, 1923.

1.462.951 E. J. WELFFENS PLANETARY GEARING Filed March 27. 1923 2 sheets -sheet 1 Emi ie J Wewcns,

' wyinfl m July 24, 192-3. fl fi fi E. J. WELFFENS PLANETARY GEARING Filed March 27. 1923 2 fimms mt 2 Qnucnfox Patented July 24, i923.

EMILE Joan wELFrENs, or MANCHESTER, ENGLAND.

PLANETARY GEAIRING.

To all whom itmag concern: 7

- Beit known'that I, EMILE JOHN WELF- FENs, a subject of the King o-fthe Belgians, residing at Manchester, England, have invented new and useful Improvements in Planetary Gearing, of which the following is a specification.

The'invention relates toplanetary gearing andis adivi'sion of an applicationfiled by 10 me July 3,1922, Serial No. 572,705.

"The object'ofthepresent invention is to improve the construction of planetarygearin 'and'toprovide constructions adapted to affbrd slow precessional or recessive moverhent to a driven member with highperipheral" operating speeds of driving members besides virtually equal paths or curves for H the "rolling driving-members, virtual as well as actual staggering of wheel and pinion teeth,=constricted execution and relative continuity of motion;

With these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion and minor details of construction, within the scope of the claims, may be resorted to without departing froni'the spirit or sacrificingany of the advantages of the invention. I

"In the drawings, in which like characters in the several views Figure 1 is alongitudin'al sectional view of aplanetary gearing, constructed in accordance with this-inventionand shown applied to a planing machine, v

"Figure 2 is a transverse sectional view on the line 2-2 of Figure 1.

In the accompanying drawings is illustrated the preferred embodiments of the invention.

Referring to Figures 1 and 2 in which the hypocyclic action speed reducing, reversing and variable speed planetary gearing is shownapplied to a planing machine, the en-, tire construction is housed in composite wheel B, which is adapted-to afford a grease or oil bath and which is in the form of a hollow drum composed of peripheral and end sections. 1 and 1 designate stationary orbit of reference designate corresponding parts Divided and this application filed March wheels secured tobus'hings A and A finedto the bedZ of the machine and servingasbearlugs for a driving shaft D and the said wheel B. 2, 2 and'2 'aredriven ring gears formedintegral with the wheel 2B. liillzthe ring gears which are-arranged interiorly'of the peripheral section of the wheel 1 B: mesh with'two sets of quintupledriving pinions' 3,

3 3 and 3 and 8 spaced 120 degrees andall medium-and q-uickspeed "forwardandae- U celerated return obtains with wheels "having the following number of teeth,"wheel 1- 244, wheel P 236, wheel'i224'2,- wheel 2 24O and wheel 2 235, and the pinions have any equal number of-teeth. "The pinions 8 and 3yhave clutch teeth on oneo-f their faces, while the pinion 3 is provided on both "of its faces with clutch "teeth. Clutches-5 and-5 are slidablykeyed to-distance' or spacing rings'oOO and 500 which, in turn, are fixedly keyed to pinions-3 'andi3 and the-said clutches-'are moved'by forks 6' an'd 6 fixed'to'rod l5 an dbushing 16 re spectively. "*Thero'd '15 is arranged within the bushing or sleeve 16 arid-both of these members-extendinto the .driving-shaft l) and project therefrom at one end of the same. The operating members 15a-ndil6 afre revolubly 'connecteidto pistons '17 and -18,

each of which carry al pair of'studsaiid guide .blocks movable in. cam like; 'slots 2'6, 26?, 27 and 27 provided in a split-cylinder in Figure 2 of the drawings.

Each pi'ston'isrotated backwardl yand I forwardly and consequently displaced through. guidance in the. cam-like slots-by means of two racks piston 17 means" of racks 122 andq23 and piston 18:by*means -of racks 24 and 25. Each pair. of racks meshes in diametrically opposite positionsrwilth the pinion 21 01 321, eaeh'pinion being integral with a spur wheel '20 or 20". The pinion and wheel 20. are. illustrated in Figure'f2 as controlling the rotation, of. piston 17, since spur wheel 20 meshes with the teeth-on the periphery of the piston 17. The other spur wheel meshes with the teeth on the pis ton 18. I

The mechanism is ilustrated in neutral position andin practice the racks 22, 23, 24c and 25 will be operated by suitable stops provided on the table of the machine and it will be obvious that by suitably fixing such stops the desired speed may be obtained. The pitch circle diameters of the sun wheels closely aproximate one another and so do the peripheral speeds and as the driving power is applied t high speed close to the circumferences of the wheel B, power transmission is obtained. with a. unit of very constricted design and good mechanical efficiency. The

' i hollow drum which consists of the wheel B and which houses the mechanism, is shown provided at its center withexternal spur teeth.

What .is claimed is: p 1. Planetary gearing comprising a stationary wheel, a drive shaft, a rotary ele-v ment mounted on the drive shaft, a planetary pinion meshing with the statlonary wheel and having a spindle mounted on the rotary element, spaced planetary pinions carried by the spindle,a wheel housing the said parts and having gear elements meshing with the pinions of the spindle, and planetary clutch mechanism for'connecting the, pinions of the spindle with the first mentioned pinion, I

2. Planetary gearing comprising a stationary wheel, a drive shaft, a'rotary element mounted on the drive shaft, a planetary pinion meshing with the stationary wheel and having a spindle mounted on the rotary element, spacedplanetary pinions carried by the spindle, a wheel consisting of a hollow drum housing the said elements I and adapted to contain a lubricant andprovided with interior gear elements meshing with the pinions of the spindle, and planetary: clutch mechanism for engaging the pinions of thevspindle to connectthem with the first mentioned pinion.

3. Planetarygearing comprising a stationary wheel, a drive shaft, a.rotary element mounted on the drive shaft, a plane tary pinion meshing with the stationary wheel and having a spindle mounted on the rotary element, spaced planetary pinions carried by the said spindle, a wheel consisting of a hollow drum provided with external spur teeth and having internal ring gears meshing with the pinions of the spindle, and planetary clutch mechanism for engaging the pinions of the spindle to connect them'withthe first mentioned pinion.

4L. Planetary gearing comprising ashaft, stationary orbit wheels spaced apart and arranged on the said shaft, a rotary element mounted on the shaft, planetary pinions meshing with the orbit wheels and having hollow spindles mounted onthe rotary element, a rod passing through the, hollow spindles and connecting the planetary pinions, spaced planetary pinions'loose on" the spindles, clutch mechanism operating between the loose pinions for connecting the same with the spindles, and gear elements meshing with the clutch controlled pinions.

5. Planetary gearing comprising a shaft,

same with the spindles, and a hollow drum housing the said parts. and provided with interiorly arranged gear elements meshing withthe clutch cont-rolledpinions, v y o 6. Planetary gearing comprising a shaft, stationary orbit wheels spaced apart and arranged on the shaft, a rotary element mounted on the shaft between the said wheels, planetary pinions meshingwith the orbit wheels and having hollow spindles mounted on the rotary element, a' rod passing through the spindles and connecting the said pinions, a plurality of loose planetary. pinions spaced apart and mounted onthe said spindles and on the'said rod, .clutch mechanism operating between the loose.pin-

' ions for connecting the same with the spindles, and gear elements meshing with the clutch controlled pinions 7. Planetary gearing comprising ahollow driving shaft, a stationaryorbitwheel arranged thereon, a rotary element mounted on the said shaft, a planetary pinion meshing with the orbit wheel and having a spindle mounted on the rotary element, a plurality of planetary pinions carried by the spindle, a clutch supported by the vspindle, having means for connecting the pinions with the first mentioned pinion, an operating member arranged within the hollow shaft,

means for connecting the operating memher with the clutch, a piston, connected to the operating member, a rotary cylinder having a cam engaging the piston and adapted to actuate the operating member, and gearing for rotating the cylinder, said gearing being provided with a slidable rack.

8. Planetary gearing comprising a hollow driving shaft, spaced stationary orbit wheels arranged on the shaft, a rotary element mounted on the shaft andlocated be tween the orbit wheels, planetary pinions meshing with the orbit wheels, means for connecting the said pinions and-for mounting the same onthe rotary element, spaced loose planetary pinions mounted on the said connecting means, clutches operating between the loose pinions for connecting the same with the first mentioned pinion, operating members arranged within the hollow shaft and connected with the clutches and mechanism for actuating the clutch operat-' ing members, including pistons, rotary cylinders receiving the pistons and having cams for engaging the same to'actuate the operating members, and means for rotating the cylinders.

9. Planetary gearing comprising a hollow driving shaft, spaced stationary orbit wheels, arranged on the shaft, a rotary element mounted on the shaft and located between the orbit wheels, planetary pinions meshing with the orbit wheels, means for connecting the said pinions and for mountsaid connecting means, clutches operating between the loose pinions for'connecting the same with the first mentioned pinion,

' operating members arranged Within the hollow shaft and connected with the clutches, and mechanism for actuating the clutch operating members, including pistons, rotary cylinders receiving the pistons and having cams vfor engaging the same to actuate the operating members, and gearing for rotating the cylinders, having pinions and provided with slidable racks meshing with the pinio ns at diametrically opposite points.

In testimony whereof I have 'signed my name to this specificaiton.

EMILE JOHN WELFFENS. 

